Column : Shodex Asahipak GS-310 7E (7.5mmID*250mm) Eluent : 0.01M KH2PO4 buffer(pH2.0)/CH3OH=40/60 Reagent : 0.005% Morin in CH3OH (for post column reaction) Flow rate : (Eluent); 1.0mL/min, (Reagent); 0.5mL/min Detector : Fluorescence(Ex. 420nm, Em. 500nm)H.Nakajima et al.,BUNSEKI KAGAKU, 36 (1987) 867